Results 41 to 50 of about 801,823 (212)

Initial Feasibility and Clinical Implementation of Daily MR-Guided Adaptive Head and Neck Cancer Radiation Therapy on a 1.5T MR-Linac System: Prospective R-IDEAL 2a/2b Systematic Clinical Evaluation of Technical Innovation [PDF]

, 2021
Purpose: This prospective study is, to our knowledge, the first report of daily adaptive radiation therapy (ART) for head and neck cancer (HNC) using a 1.5T magnetic resonance imaging-linear accelerator (MR-linac) with particular focus on safety and ...
MR-Linac Consortium Head and Neck Tumor Site Group and the Joint Head and Neck Radiotherapy-MRI Development Cooperative
core  

Ion chamber magnetic field correction factors measured via microDiamond cross-calibration from a conventional linac to MRI-linac

, 2022
Magnetic field correction factors are required for performing reference dosimetry on Magnetic Resonance Imaging Linear accelerators (MRI-linacs). Methods for measuring magnetic field correction factors usually require specialized equipment and expertise.
Paul Keall (10741502), Urszula Jelen (3574928), Lois Holloway (4513537), Gary Liney (13957344), Jarrad Begg (13957341)   +4 more
core   +1 more source

MR-Linac: Technological innovations and comparison with high-conformation techniques in the delivery of radiotherapy treatment in patients affected by prostatic neoplasia.

, 2022
openQuesto elaborato di tesi propone il confronto tra le tecniche ad alta conformazione utilizzate differentemente dal LINAC e dal MR-LINAC nell'erogazione della terapia, la descrizione di analogie e differenze riguardo il trattamento del carcinoma ...
FASSINA, LORENZO
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Evaluation of single-isocenter multiple-target IMRT using 1.5T Elekta Unity MR-guided linear accelerator for stereotactic radiosurgery of multiple brain metastases

Journal of Radiation Research and Applied Sciences
Purpose: To assess the dosimetric performance of using the 1.5T Elekta Unity magnetic resonance (MR)-guided linear accelerator (MR-Linac) for intracranial single-isocenter, multiple-target stereotactic radiosurgery (SRS).
Shiru Zou, An Li, Hang Yu, Qing Xiao, Shipai Zhu, Jinrong He, Weige Wei, Xianhu Zeng, Jialu Lai   +8 more
doaj   +1 more source

Patterns of Care, Tolerability, and Safety of the First Cohort of Patients Treated on a Novel High-Field MR-Linac Within the MOMENTUM Study: Initial Results From a Prospective Multi-Institutional Registry

, 2021
Purpose: High-field magnetic resonance-linear accelerators (MR-Linacs), linear accelerators combined with a diagnostic magnetic resonance imaging (MRI) scanner and online adaptive workflow, potentially give rise to novel online anatomic and response ...
MR-linac Consortium
core  

mapping on an MR‐Linac

, 2023
BACKGROUND: T2 * mapping can characterize tumor hypoxia, which may be associated with resistance to therapy. Acquiring T2 * maps during MR-guided radiotherapy could inform treatment adaptation by, for example, escalating the dose to resistant sub-volumes.
Bano, W, Oelfke, U, Golbabaee, M, Sam Withey, Wetscherek, A, Gupta, A, Uwe Oelfke, Rosie Goodburn, Holmes, W, Withey, S, Will Holmes, Andreas Wetscherek, Wajiha Bano, Alison Tree, Amit Gupta, Mohammad Golbabaee, Goodburn, R, Tree, A   +17 more
core   +1 more source

Detectability and intra-fraction motion of individual elective lymph nodes in head and neck cancer patients on the Magnetic Resonance Image guided linear accelerator

Physics and Imaging in Radiation Oncology
Background and purpose: Individual elective lymph node irradiation instead of elective neck irradiation is a new concept for head-and-neck cancer (HNC) patients developed for the Magnetic Resonance Image guided linear accelerator (MR-linac).
Floris C.J. Reinders, Mischa de Ridder, Peter R.S. Stijnman, Patricia A.H. Doornaert, Cornelis P.J. Raaijmakers, Marielle E.P. Philippens   +5 more
doaj   +1 more source

Evaluation of an anthropomorphic ion chamber and 3D gel dosimetry head phantom at a 0.35 T MR-linac using separate 1.5 T MR-scanners for gel readout

Zeitschrift für Medizinische Physik, 2022
Purpose: To date, no universally accepted technique for the evaluation of the overall dosimetric performance of hybrid integrated magnetic resonance imaging (MR) – linear accelerators (linacs) is available. We report on the suitability and reliability of
Lukas Nierer, Florian Kamp, Michael Reiner, Stefanie Corradini, Moritz Rabe, Olaf Dietrich, Katia Parodi, Claus Belka, Christopher Kurz, Guillaume Landry   +9 more
doaj   +1 more source

Validation of echo planar imaging based diffusion-weighted magnetic resonance imaging on a 0.35 T MR-Linac

Physics and Imaging in Radiation Oncology
Background and Purpose: The feasibility of acquiring diffusion-weighted imaging (DWI) images on an MR-Linac for quantitative response assessment during radiotherapy was explored. DWI data obtained with a Spin Echo Echo Planar Imaging sequence adapted for
Philipp Wallimann, Marco Piccirelli, Sylwia Nowakowska, Tess Armstrong, Michael Mayinger, Andreas Boss, Andrea Bink, Matthias Guckenberger, Stephanie Tanadini-Lang, Nicolaus Andratschke, Bertrand Pouymayou   +10 more
doaj   +1 more source

MR‐Linac guided adaptive stereotactic ablative body radiotherapy for recurrent cardiac sarcoma with mitral valve bioprosthesis – a case report

Journal of Medical Radiation Sciences, 2023
We present the first case in the literature of a 78‐year‐old woman with recurrent cardiac sarcoma adjacent to a bioprosthetic mitral valve treated with magnetic resonance linear accelerator (MR‐Linac) guided adaptive stereotactic ablative body ...
Vikneswary Batumalai, Madeline Carr, Michael Jameson, David Crawford, Urszula Jelen, Claire Pagulayan, Tania Twentyman, Angela Hong, Jeremy de Leon   +8 more
doaj   +1 more source